单项选择题

View the Exhibit and examine the Flashback Database architecture.
Identify the missing component （shown with a "？"） in the Flashback Database architecture.（）

A.DBWn
B.RVWR
C.ARCH
D.RECO
E.TRWR

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多项选择题

You are working on an Oracle Database 10g database. Because of data loss， you decided to perform a Flashback Database operation using the following command： SQL> FLASHBACK DATABASE TO TIMESTAMP（SYSDATE 5 24） Which two statements are true？（）

A.SYSDATE should not be used with TIMESTAMP.
B.The database must have multiplexed redo log files.
C.The database must be in the MOUNT state to execute the command.
D.The database must be opened with the RESETLOGS option after the flashback operation.
E.The entire database needs to be restored from the most recent backup before the flashback operation.

单项选择题

OnTuesday，ajuniorDBAdroppedanimportantapplicationuseraccount，whoseschemahasimportanttables.Youareaskedtorecoveralltheobjectsintheschema.Oninvestigation，youfindthattheuseraccountwasdroppedat11：00a.m.andSunday’sbackupisthemostrecentbackup.Whichflashbackfeaturewouldyouuse？（）

A.Flashback Drop
B.Flashback Table
C.Flashback Database
D.Flashback Version Query
E.Flashback Transaction Query

View the Exhibit and examine the Flashback Database architecture. Identify the missing component （shown with a "？"） in the Flashback Database architecture.（）

View the Exhibit and examine the Flashback Database architecture.
Identify the missing component （shown with a "？"） in the Flashback Database architecture.（）